I agree with b10, you should definetly look around. Start with the newbie post and routines. They will serve as a great start to learn from as well as make your own routine.
On a good note, the fact that you have found this site before entering college is huge. I found this site before my junior year and it still was huge. If you stay consistent in your routines there is no doubt that you could gain 2 plus inches in length and at an inch in girth by the time you graduate. Maybe more! One thing I will tell you about PEing, is that it makes your dick a lot healthier. One thing about college girls, most are inexperienced. If you can fuck them well, it will go a long way in the “reputatuion” department once the girls start talking. By purely doing a newbie routine on a regular basis you will begin to see an increase in size but to me what was most important was an overall increase in erection strength and stamina. If you have patience and use the next 4 years to continue to learn about PE and work on your routine, you will realize that finding this site may have been the greatest material you have learned from in the next 4 years. No joke. There is a wealth of info here, and you would be stupid not to take adavantage of it. Well anyways good luck.